Buffing machine



Mmh f9, 1948.

v0. w. MOJONNIER 2,437,398

BUFFING MACHINE Filed March 15, 1945 5 Sheets-Sheet 1 I 77/317 fan anagram/ 0711! March 9, 1948. o. w.'MOJoNN|E v BUFFING MACHINE Filed March 15, 1946 March 9, 1948. o. w. MOJONNIER 2,437,398

BUFFING MACHINE Filed March 15, 1946 5 Sheets-Sheet 3 f I I 2520 J3 119 if March 9, 1948. v o, w, MQJONNIER 2,437,398

' BUFFING MACHINE Filed March 15, 1946 5 SheetLs-Shee; 4

March 9,1948. Ow, MO ONMER 2,437,398

BUFFING MACHINE Filed March 15, 1946 I 5 Sheet-Sheec 5 .a l I J34 J45 1939 lL I 6' a 1.57

Patented Mar. 9, 1948 BUFFING MACHINE Oliver W. Mojonnier, River Forest, 111., assignor to Mojonnier Bros. 00., a corporation of Illi- Application March 15, 1946, Serial No. 654,623

17 Claims. 1

The present invention relates to buflin polishing machines generally, and more particularly to machines which buff or polish the surfaces of tanks or vats, the term tanks being used generically herein to include both tanks and vats.

One object of the invention is to provide. a buffing machinecapable of bufling the exterior surfaces of tanks in an upright position.

Another object is to provide a novel turntable for supporting the tanks and tank parts to be bufied.

Another object is to provide a novel drive b which the turntable of the machine is rotated.

Another object is to make the several parts detachable, so that they may be removed and the machine left in readiness for use upon horizontal tanks, that is, tanks having their main axes horizontal instead of vertical. i

. These and other objects and featuresof the invention will be best understood upon reference to the following detailed description taken in connection with the accompanying drawings, in which I have shown a preferred, embodiment of the invention.

The present invention is a companion to that illustrated in my prior application, Serial No. 611,545, filed August 20, 1945.

' In said drawings,

Fig. 1 is a perspective view of a bufling' machine constructed and arranged in accordance with the present invention, the turntable being removed;

Fig. 2 is a plan view of the same showing an upright tank in position for buffing its exterior, the central portion of the figure being broken away to bring the whole within the confines of the drawing;

Fig. 3 is a plan View of the turntable and its movable support;

Fig, 4 is a sectional detail through shoes with which the turntable is provided, together with a portion of a tank and one of its feet, the plane of section being indicated by the line 4- of Fig. 3;

Fig. 5 is a plan view of the movable turntable supporting structure with the turntable'removed, the plane of view being indicated by the line 55 of Fig. '7, and the position of the turntable when present being indicated by the dot and dash circle;

Fig. 6 is a substantiallyeentral longitudinal section of the movableframe, with a tank in place for bufling, the plane of section being indicated generally by the line 66 of Fig. 5;

one of the Fig. '1 is a vertical transverse section, the plane of section being indicated by the line 1-1 of Fig. '2;

Figs. 8, 9 and 10 are detail views illustrating the turntable supports, Fig. 8 showing the main aux: iliary frame in plan, Fig, 9 showing in elevation one of the ancillary supporting members, and Fig. 10 showing the details of a connection pin located on the main frame; l

Fig. 11 is a transverse section illustrating the raising and lowering mechanism, the plane of section being indicated by the line l l l| of i 2;

Fig. 12 is a perspective view of a screw engaging nut of the raising and lowering mechanism, showing the fins for retaining the nut in non-rotating p sition;

Fig, 13 is a similar view of the upper end of the supporting member for the screw showing the slots into which the fins fit; 7

Fig. 14 is an elevation of the detachable friction drive for the turntable; and i V Fig. 15 is a similar elevation view in a direction at right angles to that of Fig. 14.

Like characters refer to like parts the several views.

Thenovel bumng machine comprises, in brief, a shiitable cradle or main frame A, an auxiliary frame B removably secured thereto, ancillary supporting members B, a turntable 0 upon which the work to be buffed is located, a bufling head D having a positively driven buffing wheel, and suit able raising and lowering mechanism E by which the head B may be adjusted. The work in the present instance consists of a tank '1, the exterior of which is to be buffed. The main and auxiliary frames are shifted about as a unit over the floor of the shop where the machine is employed. The auxiliary frame B, the ancillary supporting mem-' bers B and the turntable C and its driving mechanism may be detached from the main frame and the machine may then be used upon other tanks and in different ways than herein I disclosed, as pointed out in my prior application, Serial ,No. 611,545.

The main frame or cradle A is the same'as is shown in saidprior application and comprises two sides 20 and two ends 2|, preferably channels welded together, the ends 2| resting upon the sides 20. At an intermediate point, the sides are throughout 7 connected by suitable angle irons 22, welded'to the bottom flanges of the sides. These constitute the supports for the traction motor 23 and the m0tor24 which drives the turntable C. v g

It may be pointed out that the motor 23 drives 3, the wheels 25 and 26 when the machine is used to polish horizontal tanks in the way pointed out in my prior application. When it is used as contemplated by the present invention, it drives the turntable C. The wheels 25 and 26 are idle elements insofar as the present invention is concerned, "and further reference to them will be avoided, except to point out that the two driving sprocket chains, designated a and b,'are

shown idle in Fig. 1, being strung over the shafts upon which the wheels 25 and 26 are mounted. The sprocket Wheels and d, with which they would cooperate, if used. are also shown in the same figure; they perform rio'functioninsoiar as the present invention is concerned.

Passing now to a further consideration of the structure, essential to the present invention; it will be noted that the motor 23 rests upon a base plate carried by the angle bars 22. The motor 24 is mounted on two supporting frames 21 carried'by the same cross bars 22 Y On the under side of the frame A and near its ends are bearings '28,-secured to the under sides "and 43 with the arcuate member 31. A transversebrace 41 joins opposite sides of the arcuate member.

' The central pivot 51 of the turntable C is secured within 'a'sleeve 52, welded to and forming part of a base plate 53. flanges of the end member 2! The plate is welded to The pivot is held against rotation when in set position by a set 5 0, in which are jou-rnaled two shafts Z9,carry- -'i ing traction wheels .39 which travel upon the floor.- Upon each shaftfZQ, issecured a sprocket wheel- -3l. Sprocket chains 32 engage these wheels and drive them through the sprocket wheels 3 mounted on the shaft of the gear retrolled through a cable running from the motor to the face of the switchboard- 35, where suitable control devices are provided. When once set laterallyrthe main frame and as sociated parts may be-moved to and fro upon the floor to vary the position of the work. "The switchboard36-includes a plate of metal with the various control devices (not shown) attached the-retor The auxiliary frame B comprises amain arouate member 31 provided with top and bottom flanges and end sleeves 38, by which it'isremovably attached to the adjacent en-d member 2| of the main frame A. For this purpose, the end member'is provided at each of its-ends with an upright pin '36 secured to a lateral projecting member 40, in the manner shown in Fig -lO, the variouspar-ts being welded together. When the heme member 3'! is about to be positioned upon the pins 39, it is raised and the sleeves-38 are brought into line with the pins and then the frame is lowered. The arcuate member 3! is additionally supported by three legs. One of these, designated 4!, is secured at its upper end tothe inside of the member, preferably by welding. At its lower end, it carries a wheel 42 which rests-upon the floor. The two other legs, designated -43,-are secured, also preferably by welding,:toward their upper ends, to the'outside of the member 31, and areprovided with'wheelsM at their lower ends. At their upper ends, the legs screw '56 passing through the sleeve 52.

The ancillary supporting members B take the form of supporting .posts 58 mounted upon supporting legs 59. The legs 59 terminate at their lower ends in anti-friction wheels '66 and the posts 58 terminate at their upper ends in similar wheels 6L The former engage the floor, and the latter engage the under side of the turntable. Each of the legs 59 is carried atthe outer end of a horizontal arm 62 which passes through a wide sleeve or strap 63 which is welded at its ends to the adjacent member 2| of the frame A. The straps 63 lie on the side of the member 2! away from the auxiliary frame B. By means of bolts 64 passing through the sleeves 63, the arms 62 are held in laterally adjusted position. The telescopically mounted posts 58 extend down into the hollow legs 59. Before being slipped intothe end of a leg, each post 58 is first passed through a tube '65 which serves as a spacer between the yoke 66, which carries the wheel BI, and the upper end of the leg 59. Each spacer 65 gives the associated upper wheel 6| its setting. It is held in place by the set screws 61. By giving the spacers 65 a proper length, the wheels 6| are properly setto engage the underside of the turntable 0. The spacers 65, the same as the spacers 49 of the legs 43, may be varied in length. By completely filling upthe space between the yoke and the upper end of the leg, they carry much of the weight imposed by the work upon the turntable.

The upper end of the pivot 51 bears within a socket '68 formed on the underside of the turntable C at its center. The turntable comprises, beside the socket member 68. a circular plate 69, provided with a downwardly extending peripheral flange Ill. The plate 69 fits loosely upon the pivot 5! so that the same may be tilted about three or four degrees from the horizontal. This is accomplished by the initial setting of the antifriction wheels and it may be varied by varying the length of the spacers 49 and 65.

The turntable plate 69 is rotated by friction wheels 13. These wheels, of which there is a pair, are mounted on a horizontal shaft 14, having a bearing at one end, provided by a bracket 76,- removably secured by bolts H to the same side of the frame end member 2| .of the frame A as the sliding arms 62. At its opposite end, the shaft "14 rests in a bearing formed in the upper end of a triangular support 18. A truncated plate ll lies adjacent to the plate 18. Between these plates H and 18, there are journaled two shafts 19, each of which carries anti-friction wheels 83 and 81. Two of these wheels bear against the outside of one of the wheels 13,

and two against the companion wheel 13. Thus,

in elongations which are connected at their ends bya transverse member 82, The frame thus formed is secured preferably by welding to a baseplate 86. -The entire structure is removably se cured by bolts 85 to the upper flanges of the side member 26, 26, of the frame A. 'A collar 83 upon the shaft 14 holds the friction wheels i3, 13, in place. The construction is such that the shaft 14 with itsconnected parts, which constitute the friction gearing unit, may be removed as a unit from the main frame A by removing the bolts II and 85. Due to the tilt of the turntable C downward toward the frame A, the weight of the work T upon that side of the table will be greater than upon the opposite side and hence there will be a better frictional bearing upon the friction wheels I3, I3. This tilting of the turntable is made for the purpose of providing'increased friction at the driving point. p

The end of the shaft I4, which extends beyond the bearing member I8, is provided with a sprocket wheel 81 which is keyed to the shaft. A sprocket chain 88, riding upon the-wheel 8?, drives it through the agency of the motor-driven sprocket wheel 89. The latter is located at the free end of the shaft of the speed reducer 99 of the work-driving motor 24. The motor 24 is a reversible motor so that it is possible to rotate the turntable C in either direction. This is of importance where the work contains connections which may constitute an obstruction to the continuous rotation. At this point it may be noted that the motor 24 is provided with a control 7,

cable 84 which runs to the switchboard and may be controlled by suitable mechanism thereon (not shown). ,7

As clearly shown in Fig. 3, the upper face of the circular plate 69 of the turntable C,is scribed by a plurality of concentric circles 9|, which are used in centering the work upon the table. In placing a tank in position upon the turntable, the bottom 92 is preferably provided with interiorly threaded flanges 93 into which the upper ends of the'feet 94 and 95 arescrewed. When the same is ready for shipment, these temporary feet are replaced by permanent ones which are screwed into the same flanges 93, or otherwise secured as may be desired.

' When the temporary feet 94, 95 are used, the shorter feet 94 are used with shoes 96, and the longer feet 95 are brought into direct contact with the table. It will suffice to describe one of the feet 94 and its shoe96. When screwed at its upper end into the socket 93, its lower end is placed within its shoe 96, within its flange 91 which is not threaded as is the flan e 93. e foot simply rests therein, and the flat portion of the shoe rests upon the face of the turntable plate 69. Each shoe is provided with an elongated central slot in which a retaining screw bolt 98 is located. This screw enters athreaded opening in the plate 69 and, by its head bearing down upon the upper surface adjacent to the slot, holds the shoe in place. Two shoes 96 are used. The feet 95, which are used without shoes 96, are a trifle longer than the feet 94. This difference is approximately the thickness of the sole of the shoe. The two feet 94 resting in their shoes 99 give the initial setting of the tank, and the remaining feet 95 are then unscrewed sufliciently to provide a good bearing upon the turntable 6 plate 69. In Fig. 3, the dotted lines indicate the positions the legs 95 would occupy if they were shown in this figure.

Passing now to a description of the buffing wheel structure involving the head D, we have a horizontal support I09, in the form of a hollow shaft, upon the free end of which the head is mounted. The bufling wheel is positively driven by an electric motor IIJI, both wheel and motor being moved as a unit.

,The horizontal support I66 terminates at its projecting end in a head plate I92, having a reduced portion or pintle I63. The head plate and pintle are adapted to receive a yoke I64 having a cross-piece I05 uniting two sides I96, I96. The cross-piece I95 is provided with a central bearing I91, adapted to engage the pintle I93 on the head plate I02. A ring I98 is fixed to the end of the pintle'by any suitable device, as, for examp1e,a set screw I99. The yoke I94 rotates upon the pintle I63. It may be fixed in different rotary positions by a series of bolts or pins H9 passing through cooperating holes in the head plate I 92 into threaded openings in the yoke cross-piece I65. Upon loosening the pins, the yoke I94 may be rotated to any desired adjusted position and then the pins or bolts H9 reinserted and screwed home. Thus, an adjustment of the buffer head about the longitudinal aXis of the supporting shaft I69 is provided.

to the frame of the motor at their centers. The

plates III have oppositely extending trunnions H3 which pass into hearings in the yoke members I96, I95. I The enclosure for the motor IUI is held in different adjusted positions by means of one or more pins I I4 passing through openings I I i in one of the yoke plates I96 into tight engagement with corresponding holes in the motor frame plates III, III. These pins or bolts H4 are preferably threaded and pass into engagement with threaded openings in the frame memher. The pins I I4 may be varied in number and the holes H4, with which they cooperate, may be variously located, as desired, The same will be true of the pins H9 and their cooperating openings.

The motor IIII, which drives the bufiing wheel I I5, i mounted on the free end of a buffer shaft I I6, adapted to rotate in bearings I I1, projecting from the cross; plate H2 of the motor frame, A multiple belt H8 passes over grooved pulleys H9, I29, upon the motor shaft and the shaft H6, respectively. A fender Iil projects from the adjacent end of the motor frame member H2, out over the wheel IE5, as a protective measure.

The motor I6I is an electric motor and is provided with a supply cable I22, having slack suflicient to care for it in its difiernt positions and leading off to the far side of the switchboard 36, as the parts are viewed in Fig. l, where it is supplied with suitable starting and stopping devices (not shown). f

Coming now to the raising and lowering mechanism E, by which the horizontal support I09 is firmly supported with its free end bearing the head D, it will be noted that there are two upright posts I23, I23, seated down'in the ground to a depth'of several feet, depending upon the height to which the head is to be raised. The ground may be a concrete floor or other substantial structure capable of withstanding .-the strain of the machine.

These posts I23, I23, serve as the basicsupporting members. Within them there are two telescopic members I24 which support the horizontal member I80. All these members are preferably hollow, the member I for lightness, the others to receive the screws 1 25. The upper ends of the posts I24 are cut .to fit against the underside of the horizontal member I80 and are securely Welded thereto. On the upper side of the member I30, are saddles I26, which are firmly secured-at their ends by machine screws I21,

A thrust bearing I28 is secured, by welding, to each saddle I26, and the associated portion of the horizontal member 180. It extends above and below the saddle I26, as shown. It will suffice to describe one.

The screw I25 is journaled for rotation within the bearing I28, and is held in position by an upper collar I30 and a lower collar I3I. These collars are pinned to the shaft so as to rotate with it. At a point well down within the post I23, is a nut I32'which is supported on a fixed hollow post I33and held against rotation by lateral fins 34, entering slotsl35 in the post I33. The screw I25 is threaded into the non-rotating nut. Hence, as the screw I25 is rotated, it will move up or down in the nut I32, according to the direction of rotation. At the bottom, .the posts I23 and I33'are closed with a stop-plate I36 welded to the ends.

By rotating the screws I25 equal amounts in one direction, the support I00 is raised; and by rotating the same equal amounts in the opposite direction, it is lowered. To bring about these equal rotations, I employ a reversible electric motor I31. This motor moves up and down with the horizontal support I00 to which it is attached by a base I 38, welded thereto along its lower edge, and, tied at their upper ends by straps I 39, I39, connected to the gearing support I40, which is secured to the other side of thehorizontal support I60 withintervening blocks MI. The gearing support I40 carries a'suitably joumaled shaft I 42 which projects through an opening I49 in the support I40, The shaft I42 is driven from the motor I31 through gearing, including a small sprocket wheel I43 on the motor shaft, a large sprocket wheel I44 on the shaft I42, and an interconnecting sprocket chain I45. Other sprocket chains I46 extend from small. sprocket wheels on the shaft I42 to sprocket wheelsI41 secured to the upper ends of the screws I25. The motor I31 isa reversible electric motor and is supplied with current through an electric cable, a portion of which is shown and designated I48. It communicates with suitable starting and stopping control devices upon the face of the board 36. Thus, by means of the motor I31, it is possible to raise and lower the buffer head and hence the buffing wheel.

The switchboard '36 is supported on two channel uprights II in parallelism to the main posts I23. The same is held to the posts I23 by straps I52, I53, welded thereto at their ends. The telescoping tubular member I24 is provided in each instance with two hand-holes 154 through which access may be had to the collars I 3I and adjacent parts within the post.

The cables 35, 84, I22,-and I 48. as before indicated, are provided with sufilcient slack to allow for the several adjustments occasioned by the motors 23, 24, IOI and I31, respectively. These cables extend through suitable openings (not shown) in the switchboard 36 and, as beforestated, are connected with suitable control devices. By properly manipulating these control devices, the machine may be operated in the manner indicated.

The various parts are preferably metal so as to be welded together, although other means of connecting may be employed, if desired.

Obviously, the holes which cooperate with the setting pins H4 may be as numerous as required and may be located so as to hold the bufling wheel almost vertical or almost horizontal, or at any other angle.

Thus, the butter head D may be positioned with its wheel extending downward, as shown, to work upon the exterior of a tank, or if the tank be of extra length, then the buffer wheel maybe shifted to extend upward. It may then work upon the upper portion of the long tank. Other changes in position will also be obviously made. Thus, if buffing the outside of a conical surface, the head may be shifted to a position approaching the horizontal, or the vertical, as the case may be.

Although the term tanks has been used throughout the preceding description, yet it will be understood that the particular bufiing machine, as herein disclosed, is used mainly to polish the outside of vertical tanks and tank portions which can be placed upon a turntable. The word tanks is used in a generic sense to include tanks, vats and the like. In certain industries, the term tanks is used to describe those receptacles used for cooling and storage, while in the same industries the term vats is applied to receptacles used in processing different substances.

The terms used herein, both in the specification and claims, are used in an instructive sense and not in any limiting sense. By the term buliing, in its various forms, it is intended to include grinding, polishing, and the like.

It will be understood, too, that changes may be made in the specific matter herein disclosed and, accordingly, the terms of the appended claims are relied upon to cover all such alterations and modifications which rightly come within the spirit and scope of the invention.

I claim:

1. A buffing machine comprising a turntable for receiving the work to be buffed, a movable support for said turntable, friction gearing upon said movable support engaging the underside of said turntable near its periphery, a motor for driving said friction gearing, a horizontal supporthaving a projecting end, a positively driven bufiing wheel mounted on the projecting end of said support and operative to buff the rotating piece of work upon the turntable, and means for shifting said turntable support relative to said horizontal support and for raising and lowering the latter whereby the bufiing wheel is caused to do its work or bufling.

2. A buffing machine comprising a turntable, a movable support for said turntable, means for positioning the work upon said turntable, friction gearing upon said movable support engaging the underside of said turntable near its periphery, a motor for driving said friction gearing, a horizontal support having a projecting end, a positively driven buffing wheel mounted on the projecting end of said support and operative to buff the rotating piece of Work upon the turntable, and means for shifting said turntable support relative to said horizontal support and for raising and lowering the latter whereby the bufiing wheel is caused to do its work of buiiing.

3. A bufilng machine comprising a turntable, a movable support for said turntable, means for positioning the work upon said turntable, ,said positioning means including a pair of shoes adjustably secured to said turntable and feet resting in said shoes and secured at their upper ends to the work, means mounted on said movable support for rotating said turntable, a horizontal support having a projecting end, a positively driven buffing wheel mounted on the projecting end of said support and operative to buff the rotating piece of work upon the turntable, and means for shifting said turntable support relative tosaid horizontal support and for raising and lowering the latter whereby the buffing wheel is caused to do its work of buffing.

4. A buffing machine comprising a turntable, a movable support for said turntable; means for positioning the work upon said turntable, said positioning means including a pair of shoes adjustably secured to said turntable and feetresting in said shoes and secured at their upper ends to the work, friction gearing upon said movable support engaging the underside of said turntable near its periphery, a motor for driving said friction gearing, a horizontal support having a projecting end, a positively driven bufiing wheel mounted on the projecting end of said'support and operative to buff the rotating piece of work upon the turntable, and means for shifting said turntable support relative to said horizontal support and for raising and lowering the latter whereby the bufiing wheel is caused to do its Work of buffing.

5. A buifing machine comprising a turntable; a movable support for said turntable; means for positioning the work upon said turntable by engagement therewith at four points, at two of said points there being shoes adjustably secured to said turntable and feet resting in said shoes and secured at their upper ends to said work, and at the two remaining points there being only feet resting directly upon said turntable and secured at their upper ends to the work; means mounted on said movable support for rotating said turntable; a horizontal support having a projecting end; a positively driven buffing wheel mounted-on.

the projecting end of said support and operative to bufi the rotating piece of work upon the turntable; and means for shifting said turntable support relative to said horizontal support and for raising and lowering the latter whereby the buffing wheel is caused to do its work of bufling.

6. A bufling machine comprising a turntable; a movable support for said turntable; means for positioning the work upon saidturntable by engagement therewith at four points, at two of said points therenbeing shoes adjustably secured to saidturntable and feet resting in said shoes and secured at their upper ends to said work, and at the two remaining points there being only feet resting directly upon said turntable and secured at their upper ends to the work; friction gearing upon said movable support engaging the under- 10 receiving the work to be buffed, a movable support for said turntable normally giving said turntable a slight tilt from the horizontal, friction gearing, upon said movable support for engaging the underside of said turntable On its low side, a motor for driving said friction gearing, a horizontal sup-, port having a projecting end, a positively driven bufling wheel mounted on the projecting end of said horizontal support and operative to buff the rotating piece of work upon the turntable, and means for shifting said turntable support relative to said horizontal support and for raising and lowering the latter, whereby the bufiing wheel s caused to doits work of buffing.

8. A buffing machine comprising a turntable for. receiving the work to be buffed, a, movablesupport for said turntable normally giving said turntable a slight tilt from the horizontal, friction gearing upon said fmovable support for engaging the underside of said turntable on its low side, a: motor for driving said friction gearing, means for securely positioning the work upon said tilted turntable, a horizontal support having a projecting end, a positively driven buifing wheel mounted on the projecting end of said horizontal support and operative to buff the rotating piece of work upon the turntable, and means for shifting said turntable support relative to said horizontal sup: port and for raising and lowering the latter whereby the bufiing wheel is caused to do its work of buffing.

9. A buffing machine comprising a turntable, a movable main frame, a movable auxiliary frame detachably secured to said main frame, a vertical. pivot for said turntable, a supporting sleeve securedto the end of said main frame in which said pivot is adapted to rest, ancillary supporting members secured to opposite portions of the end member of the main frame and extending outwardly therefrom, anti-friction wheels carried by said auxiliary frame and said ancillary supporting members and adapted to bear against the under-. side of said turntable near its periphery, and means for bufling work carried by said turntable.

' 10. A bufling machine comprising a turntable, a movable mainframe, a movable auxiliary frame detachably secured tosaid main frame, a vertical pivot for said turntable, a supporting sleeve secured to the end of said main frame in which s-Iaidpivot is' adapted to rest, ancillary supporting: members secured to opposite portions of the end member of the main frame and extending outwardly therefrom, anti-friction wheels carried by said auxiliary frame and said ancillary supporting members and adapted to bear against the underside of said turntable near its periphery and set to give'said turntable a slight tilt downward toward said main frame, a friction gearing unit engaging by its driving wheel with the underside of said turntable at its low point, said gearing unit being removably secured to said main frame, a motor for driving said friction gearing, and means for bllffing work carried by said turntable.

11. A bufllng machine comprising a turntable, a movable main frame, a movable auxiliary frame detachably secured to said main frame, a vertical pivot for said turntable, a supporting sleeve secured to the end of said main frame in which said pivot is adapted to rest, ancillary supporting members secured to opposite portions of the end mem ber of the main frame and extending outwardly therefrom, anti-friction wheels carried by said auxiliary frame and said ancillary supporting members and adapted to bear against the underside of said turntable near its periphery and set honed-work,

1 1 togive said turntable a slight-tilt downward-toward' said main frame,.a, friction gearing unit errgaging by its driving wheel with the underside of said turntable at its low point, said gearing unit being removably secured to said main frame, a motor for driving said friction gearing, means for securelypositioning the work upon the turntable,

means for bufiing the work upon the turntable.

12. A buifing machine comprising a turntable, a movable supporting mainframe, auxiliary supporting means cooperating with said main frame to support said turntable with a slight tilt downward toward said main frame, said auxiliary supporting means being removably connected to said main frame, a driving motor permanently mounted on said main frame, a gearing unit removably mounted on said main frame at. a point adjacent'to the low side of said turntable and operative to drive the same from said motor, means for securely positioning the work upon the turntable, and means for buffing the posi- 13. A bufling machine comprising a turntable for receiving a piece of work to be buffed, a movable main frame, a movable auxiliary frame detachably secured to said mainframe, a vertical pivot for said turntable, a supporting sleeve secured to the end of said main frame in which saidpivot is adapted to rest, ancillary supporting members secured to opposite portions of the end member of the mainframe and extending outward therefrom, anti-friction wheels carried by said auxiliary frame and said ancillary supporting members and adapted to bear against the underside of said turntable. near its periphery and set to give said turntable a slight tilt downward toward said main frame, a friction .gea-rlng unit removably' secured to said main frame,

a motor for driving said friction gearing, means for securely positioning said tank upon said turntable, ahorizontal support having a projecting end, a head plate secured to said end of said horizontal support, a yoke pivotally mounted on said head plate, a bufling wheel and driving,

motor therefor pivotally mounted on said oke, means for adjusting said yoke relative, to said. head plate, means for adjusting said buffing wheel relative to said yoke, means for shifting said main frame and auxiliary frame as a unit, and means for raising and lowering said horizontal support to shift said buffing wheel and itsdriving motor up and down.

14-. A- buffing machine comprising a main frame, a turntable removably mounted on a vertical pivot, a longitudinal shaft mounted in said main frame, a motor for driving said shaft, a detachable frictional drive between said motor and longitudinal shaft, an auxiliary frame detachably secured to said main frame, antifriction Wheels carried by saldauxiliary frame;

and adapted to bear against the underside of said turntablenear its periphery, and means for bufling the work carried by said turntable.

15. A buifing machine comprising a main frame, a turntable removably mounted on a vertical pivot, a longitudinalshaft mounted in said main frame, a motorfor driving" said shaft, a

detachable frictional drive between said motor and longitudinal shaft, an auxiliary frame detachably secured to said mainframe, ancillary supporting members secured to opposite portions of said main frame, anti-friction wheels carriedtachably secured to said main frame, and sup ported by floor engaging posts, anti-friction wheels carried by said auxiliary frame and adapted to bear against the underside of said turntable near its periphery, and means for buffing the work carried'by said turntable.

17-. A buffing machine comprising a main frame, a turntable removably mounted on a vertical pivot, a longitudinal shaft mounted insaid main frame, a motor for driving said shaft, a detachable frictional drive between said motor and longitudinal shaft, an auxiliary frame detachably secured to said main frame and supported' by floor engaging posts, ancillar supportin members secured to opposite portions of said main frame and likewise having floor engaging post-s, anti-friction wheels carried by said auxiliary frame and by said; ancillary supporting members and adapted to bear against the underside offsaid turntable near its periphery, and'means for bufiing the work carried by said turntable. V OLIVER W. MOJO-N-NIER.

REFERENCES CITED The following references are of record in theflle of this patent:

UNITED STATES PATENTS Number Name Date 1,659,228 Williams Feb. 14,1928 1,696,660 'Wegner -Dec. 25,1928 

